UPDATE 1-3i Infrastructure asset values hold steady

* First half net asset value 110.8 pence vs 111.3 pence

* Div 2.2 pence vs 2.1 pence

* Sees pipeline of "attractive" deals, completion risk high

(Adds detail)

LONDON, Nov 5 (Reuters) - British infrastructure group 3i Infrastructure Plc (3IN.L) said the value of its investments held steady in the first half as its portfolio companies continued to perform and deliver strong yields.

The separately-listed sister company to 3i Group (III.L) said on Thursday diluted net asset value (NAV) per share stood at 110.8 pence at end September compared with 111.3 pence the previous year. It increased its interim dividend to 2.2 pence from 2.1 pence.

"3i Infrastructure's portfolio continues to perform robustly and to deliver a strong yield," said chairman Peter Sedgwick.

"The company has a pipeline of attractive investment opportunities, but will maintain investment and pricing discipline as it invests its cash resources," he added.